Here's a forecast that is 100% guaranteed to be accurate: It's going to be cold this week. It's unlikely that will see temperatures above freezing for the next week -- or longer.
What isn't guaranteed is the chance of snow for later this week. It's a little too early to panic and rush to the grocery stores to ransack every last slice of bread or gallon of milk. The latest statement from the National Weather Service in Paducah says:
IT CONTINUES TO LOOK LIKE THE REGION WILL SEE ACCUMULATING SNOWFALL.. MAINLY WEDNESDAY NIGHT AND THURSDAY WITH A STORM SYSTEM FORECAST TO MOVE ACROSS THE REGION. PRELIMINARY INDICATIONS SUGGEST MODERATE ACCUMULATIONS MIGHT OCCUR... WITH AMOUNTS UP TO 3 INCHES POSSIBLE ACROSS SOUTHEAST MISSOURI... SOUTHERN ILLINOIS... SOUTHWEST INDIANA...AND WESTERN KENTUCKY. MOST MODELS PROJECT 1 TO 2 INCHES WITH ISOLATED HIGHER AMOUNTS POSSIBLE. THESE AMOUNTS ARE PRELIMINARY... AND COULD CHANGE SHOULD FORECAST MODELS ADJUST THE STORM TRACK ONE DIRECTION OR ANOTHER... OR SUGGEST NOT AS MUCH MOISTURE WILL BE AVAILABLE FOR SNOW.
Thanks to the arctic airmass in place, available moisture is going to be limited. The latest computers models have the approaching storm taking a somewhat unfavorable track (to our north), keeping accumulation totals down.
This map from the NWS shows that we are just outside of a region that has a 10% chance of getting at least 4 inches of snow.
Here's the dartboard forecast: